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Mathematics 6 Online
OpenStudy (yeval76):

Eric has been donating books he no longer needs to his local library. After 3 months of donating, he had 157 books left in his room. After 8 months of donating, he had 102 books left in his room. How many books per month did Eric donate on average between months 3 and 8? 31 books per month 18 books per month 11 books per month 7 books per month

pooja195 (pooja195):

(change in books) divided by (change in months)

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